<%@page import="ChartDirector.*, java.util.*" %>
<%
// The x and y coordinates of the grid
double[] dataX = {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0};
double[] dataY = {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0};

// The values at the grid points. In this example, we will compute the values using the formula z =
// sin((x - 0.5) * 2 * pi) * sin((y - 0.5) * 2 * pi)
double[] dataZ = new double[dataX.length * dataY.length];
for(int yIndex = 0; yIndex < dataY.length; ++yIndex) {
    double y = (dataY[yIndex] - 0.5) * 2 * 3.1416;
    for(int xIndex = 0; xIndex < dataX.length; ++xIndex) {
        double x = (dataX[xIndex] - 0.5) * 2 * 3.1416;
        dataZ[yIndex * dataX.length + xIndex] = Math.sin(x) * Math.sin(y);
    }
}

// Create a SurfaceChart object of size 720 x 540 pixels
SurfaceChart c = new SurfaceChart(720, 540);

// Add a title to the chart using 20 points Times New Roman Italic font
c.addTitle("Quantum Wave Function", "Times New Roman Italic", 20);

// Set the center of the plot region at (360, 245), and set width x depth x height to 360 x 360 x
// 270 pixels
c.setPlotRegion(360, 245, 360, 360, 270);

// Set the elevation and rotation angles to 20 and 30 degrees
c.setViewAngle(20, 30);

// Set the data to use to plot the chart
c.setData(dataX, dataY, dataZ);

// Spline interpolate data to a 80 x 80 grid for a smooth surface
c.setInterpolation(80, 80);

// Set surface grid lines to semi-transparent black (dd000000)
c.setSurfaceAxisGrid(0xdd000000);

// Set contour lines to semi-transparent white (80ffffff)
c.setContourColor(0x80ffffff);

// Add a color axis (the legend) in which the left center is anchored at (645, 270). Set the length
// to 200 pixels and the labels on the right side. Use smooth gradient coloring.
c.setColorAxis(645, 270, Chart.Left, 200, Chart.Right).setColorGradient();

// Set the x, y and z axis titles using 10 points Arial Bold font
c.xAxis().setTitle("x/L(x)", "Arial Bold", 10);
c.yAxis().setTitle("y/L(y)", "Arial Bold", 10);
c.zAxis().setTitle("Wave Function Amplitude", "Arial Bold", 10);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "",
    "title='<*cdml*><*b*>X: {x|2}<*br*>Y: {y|2}<*br*>Z: {z|2}'"));
%>
<!DOCTYPE html>
<html>
<head>
    <title>Surface Chart (2)</title>
    <!-- Include ChartDirector Javascript Library to support chart interactions -->
    <script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
    <div style="font:bold 18pt verdana;">
        Surface Chart (2)
    </div>
    <hr style="border:solid 1px #000080; background:#000080" />
    <div style="font:10pt verdana; margin-bottom:1.5em">
        <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a>
    </div>
    <!-- ****** Here is the chart image ****** -->
    <%= viewer.renderHTML(response) %>
</body>
</html>
